30×50=
4.8×100=
3600÷90=
0.3÷100=
10﹣0.36=
+ =
60× =
÷ =
× × =
11﹣ ﹣ =
36×25%=
12.6÷3=
7.3﹣3=
23×489≈
9.1+0.09=
÷2=
1÷ - ÷1=
8×1.25=
( + )×12=
0.32=
4.8a+0.2a=
2.07+0.3=
21×498≈
0.2×45= 3﹣= 10×25%= 32×0×3.08=
+= 0.5+= = (120﹣70)÷=
46+25= 840÷60= 0.25×8= 2﹣= 4÷12=
15×20= ÷= 1×= 80×110%= 401÷50≈
用分数表示是,用小数表示是,用百分数表示是。
= ×
=
= ×22+3
=10+3
=13